Singulair Emotional Side Effects, Terrible Nightmares, Mild Asthma, Clinical Pharmacology, Pulmonologist

I have read what everyone has said about the side of effects of Singulair. I really thought it was safe as for I researched the side effects and the clinical pharmacology. I also really trust our pulmonologist. My daughter started taking singulair at the age of 3 due to asthma induced pneumonia. She will soon be 4. She also has had terrible nightmares, which I dismissed as night terrors. She also complains at times it hurts to walk and her legs are tired. I thought she was over reacting and just wanted me to carry her....maybe not! I have decided to take her off the medicine today. I don't want to take the chance of her having any type of emotional side effects. It is not worth it for "mild" asthma which hasn't been confirmed, just assumed due to her age.